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https://issues.apache.org/jira/browse/YARN-5630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15487435#comment-15487435
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Hudson commented on YARN-5630:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10433 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/10433/])
YARN-5630. NM fails to start after downgrade from 2.8 to 2.7. (jlowe: rev
e7933097354a246b080b46f1a4ca2ef0f39f3b38)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/recovery/TestNMLeveldbStateStoreService.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/recovery/NMLeveldbStateStoreService.java
> NM fails to start after downgrade from 2.8 to 2.7
> -------------------------------------------------
>
> Key: YARN-5630
> URL: https://issues.apache.org/jira/browse/YARN-5630
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Blocker
> Fix For: 2.8.0, 3.0.0-alpha2
>
> Attachments: YARN-5630.001.patch, YARN-5630.002.patch
>
>
> A downgrade from 2.8 to 2.7 causes nodemanagers to fail to start due to an
> unrecognized "version" container key on startup. This breaks downgrades from
> 2.8 to 2.7.
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